!! To configure HSRP 

!! (R1 Master) 

en
conf t
int g0/0
standby 1 ip 192.168.1.1
standby 1 mac-address 5000.1111.1111
do write

!! (R2 Slave)

en
conf t
int g0/0
standby 1 ip 192.168.1.1
standby 1 mac-address 5000.1111.1111
do write

!! (Check switch mac table before stopping  R1 and after stopping R1 check it)

show mac address-table

!! PC -> ping 8.8.8.8

!! For priority and preemption:

!! (R1)

standby 1 priority 105
standby 1 preempt

!! (R2) [the default priority 100 is already there]

standby 1 preempt

!! (R1 and R2)

do show standby bri

!! To configure Path Monitoring on R1

en
conf t
ip sla 1 
icmp-echo 8.8.8.8 source-ip 200.1.1.16
frequency 10
exit

ip sla schedule 1 life forever start-time now 

track 1 ip sla 1 reachability
 
int g0/0 
standby 1 track 1 decrement 10
exit